/*
 * FreeRTOS V202212.00
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

/******************************************************************************
 * This project provides two demo applications.  A simple blinky style project,
 * and a more comprehensive test and demo application.  The
 * configCREATE_SIMPLE_TICKLESS_DEMO setting (defined in FreeRTOSConfig.h) is
 * used to select between the two.  The simply blinky demo is implemented and
 * described in main_blinky.c.  The more comprehensive test and demo application
 * is implemented and described in main_full.c.
 *
 * The comprehensive demo uses FreeRTOS+CLI to create a simple command line
 * interface through a UART.
 *
 * The blinky demo uses FreeRTOS's tickless idle mode to reduce power
 * consumption.  See the notes on the web page below regarding the difference
 * in power saving that can be achieved between using the generic tickless
 * implementation (as used by the blinky demo) and a tickless implementation
 * that is tailored specifically to the MSP432.
 *
 * This file implements the code that is not demo specific.
 *
 * See http://www.FreeRTOS.org/TI_MSP432_Free_RTOS_Demo.html for instructions.
 *
 */

/* Standard includes. */
#include <stdio.h>

/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"

/*-----------------------------------------------------------*/

/* NOTE: If an IAR build results in an undefined "reference to __write" linker
 * error then set the printf formatter project option to "tiny" and the scanf
 * formatter project option to "small". */

/*
 * Set up the hardware ready to run this demo.
 */
static void prvSetupHardware( void );

/*
 * main_blinky() is used when configCREATE_SIMPLE_TICKLESS_DEMO is set to 1.
 * main_full() is used when configCREATE_SIMPLE_TICKLESS_DEMO is set to 0.
 */
extern void main_blinky( void );
extern void main_full( void );

/*-----------------------------------------------------------*/

int main( void )
{
    /* See http://www.FreeRTOS.org/TI_MSP432_Free_RTOS_Demo.html for instructions. */

    /* Prepare the hardware to run this demo. */
    prvSetupHardware();

    /* The configCREATE_SIMPLE_TICKLESS_DEMO setting is described at the top
     * of this file. */
    #if ( configCREATE_SIMPLE_TICKLESS_DEMO == 1 )
    {
        main_blinky();
    }
    #else
    {
        main_full();
    }
    #endif

    return 0;
}
/*-----------------------------------------------------------*/

static void prvSetupHardware( void )
{
    extern void FPU_enableModule( void );

    /* The clocks are not configured here, but inside main_full() and
     * main_blinky() as the full demo uses a fast clock and the blinky demo uses
     * a slow clock. */

    /* Stop the watchdog timer. */
    MAP_WDT_A_holdTimer();

    /* Ensure the FPU is enabled. */
    FPU_enableModule();

    /* Selecting P1.2 and P1.3 in UART mode and P1.0 as output (LED) */
    MAP_GPIO_setAsPeripheralModuleFunctionInputPin( GPIO_PORT_P1, GPIO_PIN2 | GPIO_PIN3, GPIO_PRIMARY_MODULE_FUNCTION );
    MAP_GPIO_setOutputLowOnPin( GPIO_PORT_P1, GPIO_PIN0 );
    MAP_GPIO_setAsOutputPin( GPIO_PORT_P1, GPIO_PIN0 );
}
/*-----------------------------------------------------------*/

void vApplicationMallocFailedHook( void )
{
    /* vApplicationMallocFailedHook() will only be called if
     * configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h.  It is a hook
     * function that will get called if a call to pvPortMalloc() fails.
     * pvPortMalloc() is called internally by the kernel whenever a task, queue,
     * timer or semaphore is created.  It is also called by various parts of the
     * demo application.  If heap_1.c or heap_2.c are used, then the size of the
     * heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
     * FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
     * to query the size of free heap space that remains (although it does not
     * provide information on how the remaining heap might be fragmented). */
    taskDISABLE_INTERRUPTS();

    for( ; ; )
    {
    }
}
/*-----------------------------------------------------------*/

void vApplicationIdleHook( void )
{
    /* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
     * to 1 in FreeRTOSConfig.h.  It will be called on each iteration of the idle
     * task.  It is essential that code added to this hook function never attempts
     * to block in any way (for example, call xQueueReceive() with a block time
     * specified, or call vTaskDelay()).  If the application makes use of the
     * vTaskDelete() API function (as this demo application does) then it is also
     * important that vApplicationIdleHook() is permitted to return to its calling
     * function, because it is the responsibility of the idle task to clean up
     * memory allocated by the kernel to any task that has since been deleted. */
}
/*-----------------------------------------------------------*/

void vApplicationStackOverflowHook( TaskHandle_t pxTask,
                                    char * pcTaskName )
{
    ( void ) pcTaskName;
    ( void ) pxTask;

    /* Run time stack overflow checking is performed if
     * configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2.  This hook
     * function is called if a stack overflow is detected. */
    taskDISABLE_INTERRUPTS();

    for( ; ; )
    {
    }
}
/*-----------------------------------------------------------*/

void * malloc( size_t xSize )
{
    /* There should not be a heap defined, so trap any attempts to call
     * malloc. */
    Interrupt_disableMaster();

    for( ; ; )
    {
    }
}
/*-----------------------------------------------------------*/
